Greatest Ever Weapons?

I was flicking through channels and happened across The Discovery Channel’s “Greatest Ever: Weapons” This list included:

The Barret 82
The Long-bow
The Pike
The Kalashnikov AK47
The Tommy Gun
The Walther PPK
The Boomerang
The Arcabus
Man Himself

The show went on to describe why these were chosen, and I can’t be bothered to remember or type it out. I was wondering what everyone else thought? Do you agree, or is there something else you think deserves to be on this list instead? (Excluded Kamehameha’s etc, real weapons please :laughing7) Also if anyone else caught this and remembers what the 10th weapon was that would be great.